I think it's just important to continue growing our population. If you're talking about animal population I believe we shouldn't really do anything. I'm a believer and I believe that this world is going to end anyways. Even if we try to protect the animals, it's all for nothing. I don't really find any policies enacted to discourage growth shocking or anything. I haven't really heard or any lately or as far as I know, but our population is expanding and we must do something about it. Some people are against growth because they want to protect wild lands for animals and keep them safe. I have no problem with that but we have to do something.
Answer is: Bering land bridge
Explanation:
While WWI was fought in the trenches and used machine guns and poisonous gas, WWII was fought using modern artillery and machines utilizing more airplanes, ships, tanks, and submarines. Special operations methods were also developed during this war together with atomic missiles and secret communications